The first time I gave a warm oil massage was to my gf's mother. My gf was at work and her mom was complaining about sore neck and back muscles, so I offered to give her a massage. It started out innocently enough, but then she said that warmed oil would feel much better. Then she took off her top, including her bra and I rubbed her back and neck, then she turned over and her nipples were standing straight up. I had to give them some attention and she grabbed my hard through the shorts I had on. Then we both stripped down, and we both massaged each other until we had to fuck. Her mom and I got it on several times after that.